Rocket Launcher

These powerful indirect combat units are capable of firing on both ground and naval units from a great distance. Their range of fire is better than standard Artillery units and so is their power. In all Advance Wars games, they are dubbed Rockets.

In the Game Boy Wars series, Rocket Launchers are more individual units, as they deal more damage against infantry (and Unarmored vehicles in Game Boy Wars 3) than Artillery, but deal less against armored vehicles.

Rocket Launchers should be well-guarded, as they have even worse defense than the Artillery.

Advance Wars: Days of Ruin

Tactics

Rockets are, for all intents and purposes, more powerful, versatile, and expensive indirects than artillery. Most units in all games can be destroyed by their barrages within a salvo or two. Despite their great range and firepower, rockets are weakly armored and taken down quickly if caught out of position.
Rocket units move on tires, which means they need roads or shoals to deploy speedily. Therefore, when trying to find a rocket unit, look near roads. Rocket units have a range that is 3 spaces wide: from 3 spaces away to 5. This means that a rocket unit's range can completely surround any unit 4 spaces away from it, and is able to retaliate no matter which direction such a unit is attacked from.

Competitive Play

Rockets are uncommon in competitive play. Players usually use Artilleries instead. Spamming hordes of Infantry easily overwhelms them, and this is worsened by the fact that Rockets have even less defense than Artillery. In Dual Strike, Black Bombs are a serious threat to Rockets. Rockets also suffer mobility issues in Plains and Woods, and have less ammo than Artillery. Their also significantly more expensive, so saving up for them reduces your unit count (which is not good)

Trivia

The Orange Star's and Rubinelle's rocket artillery resemble both the American M270 MLRS (body, rocket launcher) and the American HIMARS rocket artillery (runs on tires).